Ink-receiving layer composition having excellent printing characteristics for decorative member, decorative member, and method for manufacturing decorative member

ABSTRACT

The present invention relates to: an ink-receiving layer composition for a decorative member, the composition comprising an acrylic emulsion, a metal salt, and organic particles or inorganic particles; a decorative member comprising a base layer, a printing layer formed on the base layer, and an ink-receiving layer disposed between the base layer and the printing layer and formed of a composition comprising an acrylic emulsion, a metal salt, and inorganic particles; and a method for manufacturing a decorative member, the method comprising a step for preparing a base layer in a flat state, a step for coating a composition comprising an acrylic emulsion, a metal salt, and organic particles or inorganic particles on the base layer, a step for drying or UV curing the coated composition to form an ink-receiving layer, and a step for forming a printing layer on the ink-receiving layer.

CROSS REFERENCE TO RELATED APPLICATION

This application is a Divisional application of U.S. patent applicationSer. No. 16/060,832, filed on Jun. 8, 2018, which is a National Stagefiling under 35 U.S.C § 371 of PCT Application No. PCT/KR2016/014959filed on Dec. 21, 2016 which is based upon and claims the benefit ofpriority to Korean Patent Application No. 10-2015-0185405 filed on Dec.23, 2015 in the Korean Intellectual Property Office. The disclosures ofthe above-listed applications are hereby incorporated by referenceherein in their entireties.

TECHNICAL FIELD

The present invention relates to an ink composition for a decorativemember, a decorative member manufactured using the ink composition, anda method for manufacturing the decorative member.

BACKGROUND ART

As interest in interior has increased recently, there is a growingdemand for a decorative member with excellent design property.

Conventionally, a method for forming a printing layer so as to form adesired design on a base layer of a wallpaper or a floor material hasbeen used to impart design property to the decorative member such as thewallpaper or the floor material.

In order to manufacture the decorative member with high design property,it is important that the printing layer is formed accurately and clearlyon the base layer.

Paper is widely used as the base layer for forming the printing layer,and in general, when paper is used as the base layer, there is no greatdifficulty in forming the printing layer on the base layer.

However, there is a problem in that an ink forming the printing layermay not adhere well to the base layer depending on the kind of the baselayer. When the ink does not adhere well to the base layer and theprinting layer is not formed clearly, the design represented by theprinting layer may not be accurately expressed, and thus, appearancequality of the entire decorative member may be greatly impaired.

For example, when a recording material such as photographic paper isused as the base layer, a polyolefin resin such as polyethylene, or thelike, is stacked on both sides of the paper, and thus, the printinglayer may not be accurately formed on the base layer, but may be spread,or may be erased by moisture, or the like.

Therefore, there is a need for a technique of forming an ink-receivinglayer between the printing layer and the base layer so that the printinglayer is able to be well formed on the base layer.

In addition, conventional decorative members have a problem in thatharmful materials are emitted.

A representative example of the harmful material is formaldehyde.Formaldehyde has strong irritation to eyes and nasal mucosa, and ishighly reactive, which may cause non-specific polymerization reactionson DNA, proteins, and lipids. The polymerization reactions may causemutation of DNA and protein. In addition, the formaldehyde is one ofcausative agents of sick house syndrome and may be a cause of atopy.Excessive inhalation of formaldehyde may lead to blindness or death.

Residents may continue to be exposed to the harmful materials emittedfrom the decorative member when the interior material such as wallpaperis used in space where the residents stay for a long time. Thus, even ifthe decorative member emits a small amount of harmful materials,accumulation of the harmful materials may seriously harm health of theresidents.

In order to solve the above problems, it is required to develop thedecorative member that does not emit the harmful materials while helpingthe printing layer to be well formed on the base layer.

DISCLOSURE Technical Problem

It is an aspect of the present invention to provide a decorative memberincluding an ink-receiving layer having no emission of harmful materialsand having greatly improved printability and durability and excellentprintability.

Technical Solution

In accordance with one aspect of the present invention, an ink-receivinglayer composition for a decorative member includes: an acrylic emulsion,a metal salt, and an organic particle or inorganic particle.

In accordance with another aspect of the present invention, a decorativemember having no formaldehyde emission includes: a base layer; aprinting layer formed on the base layer; and an ink-receiving layerdisposed between the base layer and the printing layer and formed of acomposition including an acrylic emulsion, a metal salt, and an organicparticle or inorganic particle.

In accordance with still another aspect of the present invention, amethod for manufacturing a decorative member includes: preparing a baselayer in a flat state, applying a composition including an acrylicemulsion, a metal salt, and an organic particle or inorganic particle onthe base layer, drying or UV curing the applied composition, therebyforming an ink-receiving layer, and forming a printing layer on theink-receiving layer.

Advantageous Effects

The ink-receiving layer composition for a decorative member according tothe present invention and the decorative member may have highprintability and improved durability without emission of harmfulmaterials.

According to the method for manufacturing a decorative member of thepresent invention, the printability may be increased by uniformlyapplying the ink-receiving layer on the base layer, and the productquality may be improved since no foreign materials are mixed in theprocess for manufacturing a decorative member.

DESCRIPTION OF DRAWINGS

FIG. 1 is a cross-sectional view of a decorative member according to anexemplary embodiment of the present invention.

FIG. 2 is a cross-sectional view of a decorative member according toanother exemplary embodiment of the present invention.

FIG. 3 is a cross-sectional view of a decorative member according tostill another exemplary embodiment of the present invention.

FIG. 4 is a flowchart showing a method for manufacturing a decorativemember according to the present invention.

FIG. 5 shows test results of printability of the decorative memberaccording to an exemplary embodiment of the present invention.

FIG. 6 shows test results of printability of the decorative memberaccording to Comparative Example of the present invention.

BEST MODE

Advantages and features of the present invention and methods to achievethem will be elucidated from exemplary embodiments described below indetail with reference to the accompanying drawings. However, the presentinvention is not limited to exemplary embodiment disclosed herein butwill be implemented in various forms. The exemplary embodiments areprovided by way of example only so that a person of ordinary skilled inthe art can fully understand the disclosures of the present inventionand the scope of the present invention. Therefore, the present inventionwill be defined only by the scope of the appended claims. Like referencenumerals refer to like components throughout the specification.

Ink-Receiving Layer Composition for Decorative Member

Hereinafter, an ink-receiving layer composition for a decorative memberaccording to the present invention is described in detail. Theink-receiving layer composition for a decorative member according to anexemplary embodiment of the present invention may include an acrylicemulsion, a metal salt, and an organic particle or inorganic particle.

The ink-receiving layer composition for a decorative member according tothe present invention includes 5 to 20 parts by weight of the metal saltand 10 to 30 parts by weight of the organic particle or inorganicparticle based on 100 parts by weight of the acrylic emulsion.

When the metal salt is included in an amount of less than 5 parts byweight based on 100 parts by weight of the acrylic emulsion, dissolutionof the acrylic emulsion in the ink-receiving layer composition for adecorative member may not be sufficiently secured since the number ofcations and anions manufactured by dissociation of the metal salt issmall. In addition, when the metal salt is included in an amount of morethan 20 parts by weight, the concentration of the acrylic emulsion inthe ink-receiving layer composition for a decorative member may belowered, and thus, sufficient printability may not be secured.

When the organic particle or the inorganic particle is included in anamount of less than 10 parts by weight based on 100 parts by weight ofthe acrylic emulsion, there is a problem in that the ink-receiving layercomposition for a decorative member has low durability and dryingproperty of the ink is lowered. In addition, when the organic particleor the inorganic particle is included in an amount of more than 30 partsby weight, there may be a problem in that blurring of the ink may occur,and thus, the printability may be lowered, and viscosity of theink-receiving layer composition for a decorative member may beexcessively large, and thus, it is difficult to apply the ink-receivinglayer composition for a decorative member on the base layer.

A preferred viscosity of the ink-receiving layer composition for adecorative member according to the present invention is 20 cP to 600 cPat 25° C. When the viscosity of the ink-receiving layer composition fora decorative member is less than 20 cP or more than 600 cP, it isdifficult to apply the ink-receiving layer composition for a decorativemember on the base layer.

Hereinafter, each component included in the ink-receiving layercomposition for a decorative member of the present invention isdescribed in detail.

Acrylic Emulsion

First, the acrylic emulsion serves as a binder in the ink-receivinglayer composition for a decorative member according to the presentinvention. The acrylic emulsion may be anionic or cationic.

Since the acrylic emulsion is used as the binder of the ink-receivinglayer composition for a decorative member, there is no formaldehydeemission.

Non-limiting examples of a monomer used in the acrylic emulsion includemethyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate,butyl acrylate, hexyl acrylate, octyl acrylate, lauryl acrylate,cyclohexyl acrylate, methyl methacrylate, ethyl methacrylate, hexylmethacrylate, isopropyl methacrylate, butyl methacrylate, hexylmethacrylate, octyl methacrylate, styrene, acrylic acid, methacrylicacid, glycidyl acrylate, glycidyl methacrylate, hydroxyethyl acrylate,hydroxyethyl methacrylate, hydroxylpropyl acrylate, hydroxypropylmethacrylate, etc.

The acrylic emulsion is prepared by mixing a resin and/or a plasticizerwith one or two or more monomers.

The plasticizer may be a phthalate-based or non-phthalate-basedplasticizer.

The resin may be an acrylic polymer or a cellulose-based polymer.

The acrylic emulsion may further include a surfactant, an emulsifier, apreservative, and a buffer. The emulsifier may be non-ionic, anionic,cationic or zwitterionic, and preferably has good spreadability in therange from 30 to 35 dynes/cm. The preservative prevents fungi orbacteria from changing physical properties of the emulsion. The bufferstabilizes pH during a polymerization reaction if the polymerization ofthe emulsion is performed in an acidic environment

The acrylic emulsion may be preferably prepared by emulsionpolymerization, but a preparation method thereof is not particularlylimited. When the acrylic emulsion is prepared by emulsionpolymerization, yield is good and a molecular weight distribution(Mw/Mn) of the resulting acrylic emulsion is in a relatively small rangefrom 2.0 to 4.84.

Metal Salt

Next, the metal salt included in the ink-receiving layer composition fora decorative member according to the present invention is described.

The metal salt is dissociated into cations and anions in theink-receiving layer composition for a decorative member to therebyassist the cationic or anionic acrylic emulsion to be capable of beingeasily dissolved in the ink-receiving layer composition for a decorativemember.

Accordingly, the metal salt may increase printability of the decorativemember formed by using the ink-receiving layer composition for adecorative member.

The metal salt may be at least one selected from the group consisting ofnitrate of Zn, Cu, Fe, Mn, Li, Ag, Mg, and Ca, sulfate of Zn, Cu, Fe,Mn, Li, Ag, Mg, and Ca, chloride salt of Zn, Cu, Fe, Mn, Li, Ag, Mg, andCa, and a combination thereof.

Organic Particle

In the ink-receiving layer composition for a decorative member accordingto the present invention, the organic particle increases the durabilityof the ink-receiving layer.

The kind of the organic particles is not particularly limited, but maybe preferably calcium carbonate.

Inorganic Particle

In the ink-receiving layer composition for a decorative member accordingto the present invention, the inorganic particle increases thedurability of the ink-receiving layer, which is the same as the organicparticle.

The kind of the inorganic particle is not particularly limited, but maybe preferably at least one selected from the group consisting ofkaoline, silica, alumina, TiO₂, Ca(OH)₂, CaO, Al(OH)₃, Al₂O₃, and acombination thereof.

Decorative Member 100

Hereinafter, a decorative member 100 according to the present inventionis described in detail. Referring to FIG. 1, the decorative member 100according to an exemplary embodiment of the present invention mayinclude a base layer 10; a printing layer 30 formed on the base layer;and an ink-receiving layer 20 disposed between the base layer and theprinting layer and formed of a composition including an acrylicemulsion, a metal salt, and an organic particle or inorganic particle,wherein there is no formaldehyde emission.

Hereinafter, each configuration included in the decorative member of thepresent invention is described in detail.

Base Layer (10)

Referring to FIG. 1, the base layer 10 included in the decorative member100 according to the present invention, which is a basic layer of thedecorative member 100, may support the ink-receiving layer 20, theprinting layer 30, etc., at an upper part, and may absorb impact of theupper and lower parts.

In addition, the base layer 10 may have a thickness of about 0.1 μm toabout 100 μm, but the thickness is not limited thereto.

A material that is usable for the base layer 10 includes, but is notlimited to, at least any one of PVC, PET, paper, woody board, inorganicboard, and synthetic resin board.

A surface of the base layer 10 may be in any form, but it is preferablyflat for the uniform application of the ink-receiving layer 20 and theprinting layer 30 on the base layer 10.

Printing Layer 30

Referring to FIG. 1, the printing layer 30 included in the decorativemember 100 according to the present invention may be formed by impartingpatterns in various manners such as gravure printing, screen printing,offset printing, rotary printing, flexo printing, etc.

The ink used for forming the printing layer 30 is not particularlylimited, and may be a general ink in the art.

The printing layer 30 may have a thickness of 0.1 to 5 mm, but thethickness is not limited thereto.

Ink-Receiving Layer 20

Referring to FIG. 1, the ink-receiving layer 20 included in thedecorative member according to the present invention may have noemission of harmful materials, in particular, formaldehyde, and maymaximize the printability and increase the durability of the decorativemember.

The ink-receiving layer 20 is positioned between the base layer 10 andthe printing layer 30 to assist in forming the printing layer 30 on thebase layer 10.

Specifically, the acrylic emulsion in the ink-receiving layer 20performs a binder function of binding the base layer 10 and the printinglayer 30, and thus, the printing layer 30 may be formed well on the baselayer 10 regardless of the type of the base layer 10.

The ink-receiving layer 20 may be formed of a composition including anacrylic emulsion, a metal salt, and an organic particle or inorganicparticle. The details of the acrylic emulsion, metal salt and organicparticle or inorganic particle included in the ink-receiving layer 20are the same as described above.

In addition, as described above, the ink-receiving layer 20 may beformed of a composition in which a viscosity at 25° C. is 20 cP to 600cP, and may be formed of a composition including 5 to 20 parts by weightof the metal salt and 10 to 30 parts by weight of the organic particleor inorganic particle based on 100 parts by weight of the acrylicemulsion.

The ink-receiving layer has a preferable thickness range from 2 to 5microns. When the thickness of the ink-receiving layer 20 is less than 2microns, the amount of the acrylic emulsion included in theink-receiving layer may be insufficient, and thus, the binding of theprinting layer 30 and the base layer 10 may not be achieved. Inaddition, when the thickness of the ink-receiving layer 20 is more than5 microns, since the ink-receiving layer 20 is excessively thick, adistance between the printing layer 30 and the base layer 10 isexcessively long, and thus, the binding of the printing layer 30 on thebase layer 10 may not be achieved.

Transparent Layer 40

Referring to FIG. 2, the decorative member 100 according to the presentinvention may further include a transparent layer 40 on the printinglayer 30. The transparent layer 40 may be formed at the uppermost partin order to enhance surface quality such as scratch resistance, abrasionresistance, or the like, and to improve stain resistance of thedecorative member 100.

A thickness of the transparent layer 40 is preferably 0.5 mm to 5 mm.When the thickness of the transparent layer 40 is less than 0.5 mm,improvement of the scratch resistance, abrasion resistance, or the stainresistance of the decorative member 100 may not be achieved. Inaddition, when the thickness of the transparent layer 40 is more than 5mm, reflection or refraction of the visible light by the transparentlayer 40 may reduce appearance of the pattern to be expressed by theprinting layer.

The transparent layer 40 may be formed of a composition including atleast one selected from the group consisting of a polyethyleneterephthalate (PET) film, a polybutylene terephthalate (PBT) film, apolycarbonate film, an ethylene vinyl acetate (EVA) film, a polyethylenefilm, a polypropylene film, and a combination thereof.

Method for Manufacturing Decorative Member

Hereinafter, a method for manufacturing a decorative member according tothe present invention is described in detail.

Referring to FIG. 4, the method for manufacturing a decorative memberaccording to an exemplary embodiment of the present invention includes:preparing a base layer in a flat state S10, applying a compositionincluding an acrylic emulsion, a metal salt, and an organic particle orinorganic particle on the base layer, drying or UV curing the appliedcomposition, thereby forming an ink-receiving layer S20, and forming aprinting layer on the ink-receiving layer S30.

According to an exemplary embodiment of the present invention, theink-receiving layer and the printing layer are formed on one side of thebase layer in order. However, as shown in FIG. 3, the ink-receivinglayer and the printing layer may be formed on both sides of the baselayer, if necessary. When the decorative member is not attached to awall or a floor, the ink-receiving layer and the printing layer may berequired to be formed on both sides of the base layer.

Step of Preparing Base Layer S10

The base layer 10 is preferably flat in order to uniformly apply theink-receiving layer composition on the base layer 10. The uniformapplication of the ink-receiving layer 20 helps the printing layer 30 tobe precisely formed, thereby expressing desired patterns.

Step of Applying Composition and Forming Ink-Receiving Layer S20

Details of the acrylic emulsion, the metal salt, and the organicparticle or the inorganic particle included in the composition appliedon the base layer 10 are as described above.

As a method for applying the composition on the base layer 10, a rollcoating method may be used, but the present invention is not limitedthereto.

The composition applied on the base layer 10 is dried to form theink-receiving layer 20. The composition is preferably dried in atemperature range from 80° C. to 200° C. The drying may not besufficiently performed at a temperature lower than 80° C., and the baselayer 10 formed of a material such as paper, PET, or the like, may bedeformed at a temperature higher than 200° C.

Step of Forming Printing Layer S30

The printing layer 30 is formed on the ink-receiving layer 20. Theprinting layer 30 may be formed by at least one method selected from thegroup consisting of gravure printing, screen printing, offset printing,rotary printing or flexo printing and a combination thereof, using awater-based ink.

Step of Forming Printing Layer

In an exemplary embodiment of the present invention, the transparentlayer 40 may be further formed on the printing layer 30. The transparentlayer 40 has an effect of enhancing surface quality such as scratchresistance, abrasion resistance, or the like, and improving stainresistance of the decorative member 100.

The transparent layer 40 is formed on the printing layer 30 by thermallamination. The thermal lamination is preferably performed in atemperature range from 100° C. to 200° C.

When the thermal lamination is performed at a temperature lower than100° C., the temperature is lower than a glass transition temperature(Tg) of a material forming the transparent layer 40, and thus, thetransparent layer 40 may not adhere well on the printing layer 30.Further, when the thermal lamination is performed at a temperaturehigher than 200° C., the base layer 10 may be deformed.

Hereinafter, specific examples of the present invention will beprovided. It is to be noted that Examples to be described below areprovided merely for specifically exemplifying or explaining the presentinvention, and accordingly, the present invention is not limited to thefollowing Examples.

EXAMPLE

1. Preparation of Ink-Receiving Layer Composition for Decorative Member

The acrylic emulsion used for preparing the ink-receiving layercomposition for a decorative member in each of Examples and ComparativeExamples was prepared by polymerizing a mixture including butylacrylate, methyl methacrylate, hydroxyethyl acrylate, a phthalate-basedplasticizer and an emulsifier (BriteCoat 2730 (VAE emulsion)) throughemulsion polymerization. Further, in order to prepare the ink-receivinglayer composition for a decorative member, MgCl₂, CaCl₂) or ZnCl₂ metalsalt was used and silica or kaolin was used as an inorganic particle.

The ink-receiving layer composition for a decorative member was preparedby stirring the above-described acrylic emulsion, metal salt, organicparticle or inorganic particle in an environment of 100° C.

Amounts of the acrylic emulsion, the metal salt, the organic particle orthe inorganic particle in Examples and Comparative Examples are shown inTable 1 below.

TABLE 1 Example Example Example Example Example Example ExampleComparative Comparative Comparative 1 2 3 4 5 6 7 Example 1 Example 2Example 3 Acrylic Acrylic 100 100 100 100 100 100 100 100 100 100emulsion emulsion Metal MgCl₂ 20 20 20 salt CaCl₂ 20 20 ZnCl₂ 20 20Inorganic Silica 30 30 30 30 particle Kaoline 30 30 30 30 InorganicCalcium 30 particle carbonate

2. Manufacture of Decorative Member

(1) Manufacture of Decorative Members According to Examples

The ink-receiving layer compositions for a decorative member accordingto the above Examples and Comparative Examples were applied to a flatPVC base layer having a thickness of 2.0 mm so as to have a thickness of3 microns by a roll coating method.

Each ink-receiving layer composition for a decorative member applied tothe base layer was dried in a 120° C. Mathis oven (manufactured byMATHIS AG).

On the ink-receiving layer composition formed by drying theink-receiving layer composition for a decorative member, a printinglayer was formed by a screen printing method.

(2) Manufacture of Decorative Member According to ComparativeExamples 1) Comparative Example 1

Comparative Example 1 was performed in the same manner as in Example 1except that the decorative member was manufactured by including theink-receiving layer formed of the ink-receiving layer compositionwithout including the metal salt and the inorganic particle.

2) Comparative Example 2

Comparative Example 2 was performed in the same manner as in Example 1except that the decorative member was manufactured by including theink-receiving layer formed of the ink-receiving layer compositionwithout including the metal salt.

3) Comparative Example 3

Comparative Example 3 was performed in the same manner as in Example 4except that the decorative member was manufactured by including theink-receiving layer formed of the ink-receiving layer compositionwithout including the metal salt.

3. Evaluation of Decorative Member

The printability and durability of the decorative members of Examplesand Comparative Examples were evaluated. The durability was evaluated bythree divided physical properties: drying property, processability, andviscosity suitability.

The drying property was evaluated by drying the decorative memberapplied with the ink for 3 seconds in a 160° C. Mathis oven(manufactured by MATHIS AG), and confirming whether the drying wascompleted. A case where the drying was completed was marked by O, and acase where the drying was not completed was marked by X.

The processability was evaluated by visually confirming whether the inkwas uniformly applied to the base material, that is, uniformity ofapplication. A case where the ink was uniformly applied to the entireregion of the decorative member was marked by O, a case where theapplication was not uniformly performed to some region of the decorativemember but there was no effect on marketability was marked by Δ, and acase where the application was not uniformly performed and themarketability was impaired was marked by X.

In the case of the viscosity suitability, a case where a viscosity at25° C. of the ink-receiving layer composition was 20 cP to 600 cP wasmarked by O, a case where the viscosity was more than 600 cP to 700 cPor less was marked by Δ, and a case where the viscosity was more than700 cP was marked by X.

The printability was confirmed by photographing whether the ink wasfixed at the place where the ink was applied on the decorative member orthe ink flowed down after being applied, using an optical microscope. Acase where there was no flowing ink and all the ink was fixed on thedecorative member was marked by ⊚, a case where the ink was applied in aregion of 98% or more to less than 100% was marked by O, a case wherethe ink was fixed in the region of 95% or more to less than 98% wasmarked by Δ, and a case where the ink was fixed in the region of lessthan 95% was marked by X.

Evaluation results of physical properties of the Examples andComparative Examples are shown in Table 2 below:

TABLE 2 Example Example Example Example Example Example ExampleComparative Comparative Comparative 1 2 3 4 5 6 7 Example 1 Example 2Example 3 Drying ◯ ◯ ◯ ◯ ◯ ◯ ◯ X ◯ ◯ property Processability ◯ ◯ ◯ Δ Δ ΔΔ X X X Viscosity ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ X Δ suitability Printability ◯ ⊚ ◯ ◯ ⊚◯ ◯ X X X

In the drying property, Examples 1 to 7 were all excellent. That is, thedecorative members of Examples 1 to 7 were completely dried when theywere dried for 3 seconds in a 160° C. Mathis oven (manufactured byMATHIS AG). The drying property is an important physical property in acontinuous process. When three seconds or more are required to dry theink, a process after the drying may be delayed, and thus efficiency ofthe entire process may be reduced. In Comparative Example 1 having poordrying property, the ink-receiving layer composition formed only of theacrylic emulsion was not dried easily, and the ink stained on the handeven after the drying process.

Examples 1 to 3 showed excellent processability and Examples 4 to 7showed insufficient processability as compared to those of Examples 1 to3. In Comparative Examples, it could be confirmed that theprocessability was remarkably insufficient. The processability is toconfirm whether the ink was uniformly applied to the base material, andis an element directly related to the appearance quality of the product.In Comparative Examples 1 to 3 in which the metal salt was not included,the acrylic emulsion did not dissolve well in the ink-receiving layercomposition, resulting in non-uniform application of the ink.

The viscosity suitability is to confirm whether the viscosity of thecomposition is within the desired viscosity range from 20 to 600 cP. Theviscosity of the composition is related to the ease of application ofthe composition. That is, when the viscosity is higher than 600 cP, itmay be difficult to apply the composition onto the base material. All ofthe compositions of the Examples according to the present invention wereexcellent in viscosity suitability.

The printability is to confirm whether the ink is fixed to the placewhere the ink was applied on the base material. When the ink was notfixed at the place where the ink was applied but flowed down, theappearance of the product was impaired and it was difficult to print adesired pattern. FIGS. 5 and 6 are images of the decorative memberhaving excellent printability and the decorative member having poorprintability, respectively, taken by the optical microscope. It could beconfirmed that in the decorative member having excellent printability,the pink ink was well fixed on the base material and uniformlydistributed. On the other hand, it could be confirmed that in thedecorative member having poor printability, the pink ink was not fixedon the base material but flowed down, and thus, the ink was not appliedin some region. The compositions of the Examples according to thepresent invention had excellent printability, but the compositions ofthe Comparative Examples did not have excellent printability.

1. An ink-receiving layer composition for a decorative membercomprising: an acrylic emulsion, a metal salt, and an inorganicparticle.
 2. The ink-receiving layer composition of claim 1, wherein 1to 20 parts by weight of the metal salt and 5 to 30 parts by weight ofthe inorganic particle are included based on 100 parts by weight of theacrylic emulsion.
 3. The ink-receiving layer composition of claim 1,wherein a viscosity at 25° C. is 20 cP to 600 cP.
 4. The ink-receivinglayer composition of claim 1, wherein the metal salt is at least oneselected from the group consisting of nitrate of Zn, Cu, Fe, Mn, Li, Ag,Mg, and Ca, sulfate of Zn, Cu, Fe, Mn, Li, Ag, Mg, and Ca, chloride saltof Zn, Cu, Fe, Mn, Li, Ag, Mg, and Ca, and a combination thereof.
 5. Theink-receiving layer composition of claim 1, wherein the inorganicparticle is at least one selected from the group consisting of kaoline,silica, alumina, TiO₂, Ca(OH)₂, CaO, Al(OH)₃, calcium carbonate and acombination thereof.
 6. A method for manufacturing a decorative membercomprising: preparing a base layer in a flat state, applying acomposition including an acrylic emulsion, a metal salt, and aninorganic particle on the base layer, drying or UV curing the appliedcomposition, thereby forming an ink-receiving layer, and forming aprinting layer on the ink-receiving layer.
 7. The method of claim 6,wherein the drying of the composition is performed in a temperaturerange from 80° C. to 200° C.
 8. The method of claim 6, wherein theforming of the printing layer is performed according to at least onemethod selected from the group consisting of transfer printing, gravureprinting, screen printing, offset printing, rotary printing or flexoprinting and a combination thereof, using a water-based ink.
 9. Themethod of claim 6, wherein a transparent layer is further formed on theprinting layer.
 10. The method of claim 9, wherein the transparent layeris formed on the printing layer by thermal lamination.
 11. The method ofclaim 10, wherein the thermal lamination is performed in a temperaturerange from 100° C. to 200° C.